<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="章节名" prop="chapterName">
        <el-input
          v-model="queryParams.chapterName"
          placeholder="请输入章节名"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="课程" prop="courseId">
       <el-select
          clearable
          v-model="queryParams.courseId"
          placeholder="请选择课程"
        >
          <el-option
            v-for="item in courses"
            :key="item.courseId"
            :label="item.courseName"
            :value="item.courseId"
            >{{ item.courseName }}</el-option
          >
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['chapter:chapter:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['chapter:chapter:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['chapter:chapter:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          :loading="exportLoading"
          @click="handleExport"
          v-hasPermi="['chapter:chapter:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="chapterList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
     
      <el-table-column label="章节名" align="center" prop="chapterName" />
      <!-- <el-table-column label="父id" align="center" prop=" chapterParentId" /> -->
      <el-table-column label="课程" align="center" prop="courseName" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['chapter:chapter:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['chapter:chapter:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改章节管理对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="章节名" prop="chapterName">
          <el-input v-model="form.chapterName" placeholder="请输入章节名" />
        </el-form-item>
        <!-- <el-form-item label="父id" prop=" chapterParentId">
          <el-input v-model="form. chapterParentId" placeholder="请输入父id" />
        </el-form-item> -->
        <el-form-item label="课程id" prop="courseId">
          <el-select
          clearable
          v-model="form.courseId"
          placeholder="请选择课程"
        >
          <el-option
            v-for="item in courses"
            :key="item.courseId"
            :label="item.courseName"
            :value="item.courseId"
            >{{ item.courseName }}</el-option
          >
        </el-select>
        </el-form-item>
      
      
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listChapter, getChapter, delChapter, addChapter, updateChapter, exportChapter,listCourse } from "@/api/chapter/chapter";

export default {
  name: "Chapter",
  data() {
    return {
      //课程类型
      courses:[],
      // 遮罩层
      loading: true,
      // 导出遮罩层
      exportLoading: false,
      // 选中数组
      ids: [],
      // 子表选中数据
      checkedQtCourse: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 章节管理表格数据
      chapterList: [],
      // 课程管理表格数据
      qtCourseList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        chapterName: null,
        courseId: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询章节管理列表 */
    getList() {
      this.loading = true;
      listChapter(this.queryParams).then(response => {
        this.chapterList = response.rows;
        this.total = response.total;
        this.loading = false;
      }).then(()=>{
        this.getCourse();
      });
    },
    getCourse(){
      listCourse().then((res)=>{
        this.courses=res.rows;
      })
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        chapterId: null,
        chapterName: null,
         chapterParentId: null,
        courseId: null,
        chapterStr: null,
        chapterInt: null
      };
      this.qtCourseList = [];
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.chapterId)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加章节管理";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const chapterId = row.chapterId || this.ids
      getChapter(chapterId).then(response => {
        this.form = response.data;
        this.qtCourseList = response.data.qtCourseList;
        this.open = true;
        this.title = "修改章节管理";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          this.form.qtCourseList = this.qtCourseList;
          if (this.form.chapterId != null) {
            updateChapter(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addChapter(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const chapterIds = row.chapterId || this.ids;
      this.$modal.confirm('是否确认删除章节管理编号为"' + chapterIds + '"的数据项？').then(function() {
        return delChapter(chapterIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
	/** 课程管理序号 */
    rowQtCourseIndex({ row, rowIndex }) {
      row.index = rowIndex + 1;
    },
    /** 课程管理添加按钮操作 */
    handleAddQtCourse() {
      let obj = {};
      obj.typeId = "";
      obj.courseName = "";
      this.qtCourseList.push(obj);
    },
    /** 课程管理删除按钮操作 */
    handleDeleteQtCourse() {
      if (this.checkedQtCourse.length == 0) {
        this.$modal.msgError("请先选择要删除的课程管理数据");
      } else {
        const qtCourseList = this.qtCourseList;
        const checkedQtCourse = this.checkedQtCourse;
        this.qtCourseList = qtCourseList.filter(function(item) {
          return checkedQtCourse.indexOf(item.index) == -1
        });
      }
    },
    /** 复选框选中数据 */
    handleQtCourseSelectionChange(selection) {
      this.checkedQtCourse = selection.map(item => item.index)
    },
    /** 导出按钮操作 */
    handleExport() {
      const queryParams = this.queryParams;
      this.$modal.confirm('是否确认导出所有章节管理数据项？').then(() => {
        this.exportLoading = true;
        return exportChapter(queryParams);
      }).then(response => {
        this.$download.name(response.msg);
        this.exportLoading = false;
      }).catch(() => {});
    }
  }
};
</script>
